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Finding the Fourth Proportional to 3,880.37, 5,820.60 and 958.68

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Solution

The fourth proportional to 3,880.37, 5,820.60 and 958.68 is: 1,438.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.37 : 5,820.60 = 958.68 : x
  2. Step 2: Convert to fraction form
    3,880.37/5,820.60 = 958.68/x
  3. Step 3: Cross multiply
    3,880.37x = 5,820.60 × 958.68
  4. Step 4: Simplify right side
    3,880.37x = 5,580,092.81
  5. Step 5: Solve for x
    x = 5,580,092.81/3,880.37
  6. Step 6: Final answer
    x = 1,438.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.